package org.apache.solr.schema;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * An interface that can be extended to provide a callback mechanism for
 * informing an {@link IndexSchema} instance of changes to it, dynamically
 * performed at runtime.
 * 
 * @since SOLR-1131
 * 
 **/
public interface SchemaAware {
	/**
	 * Informs the {@link IndexSchema} provided by the <code>schema</code>
	 * parameter of an event (e.g., a new {@link FieldType} was added, etc.
	 * 
	 * @param schema
	 *            The {@link IndexSchema} instance that inform of the update to.
	 * 
	 * @since SOLR-1131
	 */
	public void inform(IndexSchema schema);
}
